Hardware for a fully-glazed door

ABSTRACT

A fitting for an all-glass door with an upper bearing which substantially includes a fitting body with a glass receptacle and/or a clamping device for a glass leaf and with a bearing pin for engagement in a counterbearing at an overpanel or in a frame. The bearing pin is displaceable in a pocket hole. To provide a fitting that resists intrusion after the glass door is installed, the bearing pin of the fitting is secured in such a way that the glass leaf is prevented from being lifted out when the all-glass door is closed.

The invention is directed to a fitting, in particular for all-glassdoors, comprising an upper fitting having a fitting body with a clampingdevice for the glass leaf and with a bearing pin for engaging in acounterbearing at the transom or overpanel.

Fittings of the type mentioned above are sufficiently well known.However, the fittings of the upper counterbearing which is supported atan overpanel above the glass leaf of the glass door are generallyoriented transverse to the vertical axis of the glass door. DE 299 24319 U1 discloses a fitting of this type for the rotatable bearingsupport of a door leaf at a frame construction. In this case, a fittingis arranged at the top and bottom of the door leaf, respectively, andcooperates with a complementary counter-fitting at a frame construction.The fitting is characterized in that a bearing axis extends in the planeof the door leaf and in that the fitting is fastened in a complementaryrecess of the door leaf. At the same time, the fitting is dividedlongitudinally by an intermediate space into fitting parts which arespaced apart at least partially so as to form opposite stop faces. Theglass pane is fastened by screw members which engage in the fitting fromone side. The upper fitting has a nonadjustable bearing pin.

DE 89 105 69.9 U1 discloses an upper bearing element which has a bearingpin that is displaceable in longitudinal direction of the door (verticalaxis). This bearing pin is held by a screw that is arranged orthogonalto the bearing pin and can be adjusted in height by loosening thisbearing screw. For this purpose, an elongated hole is provided in thefitting part. The bearing pin penetrates into a pocket hole so that whenthe door is used the bearing pin disappears into the pocket hole and,after using the door, the bearing pin is pressed out of the bearing dueto the orthogonal screw and penetrates into the counterbearing locatedat the overpanel. A construction of this kind facilitates mounting ofthe glass door.

DE 298 13 219 U1 discloses a fitting for an all-glass leaf whose bottomfitting parts are terminated by caps.

It is the object of the present invention to provide a fitting which isresistant to break-in after the glass door is installed.

This object is met by the features indicated in claim 1. Advantageousconstructions of the subject matter of claim 1 are indicated in thesubclaims.

The upper fitting is provided with lift-out protection by means of thefitting arrangement indicated in claim 1. The lift-out protection actsin an outwardly inconspicuous manner because it is arranged below thefitting body, or a clamping device, that is terminated by cover caps.

According to an advantageous further development, the bearing pin isfastened to the fitting body and/or to the clamping device for theall-glass leaf by at least one fastening screw. The fastening screwpenetrates into or through the bearing pin orthogonal to the center axisof the bearing pin. The fastening screw is inserted into an elongatedhole inside the fitting body and/or the clamping device so that thebearing pin is displaceable in direction of the vertical axis. Thethread of the fastening screw penetrates into a threaded bore holewithin the bearing pin. By tightening the fastening screw when thebearing pin is moved out, this bearing pin is connected to the fittingbody and/or to the clamping device in a frictional and positiveengagement.

Due to the fact that the bearing pin is located inside a pocket hole, itis possible to introduce another screw element below the moved outbearing pin, which other screw element likewise penetrates the fittingbody and/or the clamping device orthogonal to the center axis of thebearing pin. It is not possible to disassemble the installed all-glassleaf when the door is closed because of the arrangement of the safetyscrew, namely, because the safety screw is arranged so as to be offsetby 180° relative to the fastening screw. This can only be done when thesafety screw is unscrewed or loosened on one side of the all-glass doorand the fastening screw is unscrewed or loosened on the opposite side.However, this means that the fitting and/or the clamping device must beaccessible from both sides of the door leaf.

If only the safety screw were removed after removing the cover on oneside of the all-glass door, the bearing pin could not be lowered byreason of the design because the fastening screw holds the bearing pinin its position even when the safety screw is removed. This is due tothe fact that the fastening screw, which is offset by 180° relative tothe safety screw, is accessible within the space in this case. Not untilthe all-glass door is opened can the fastening screw also be loosened sothat the bearing pin can penetrate into the fitting body and/or into theclamping device. However, this is only possible when the safety screwhas been completely removed. When the safety screw is removed, the lowerpart of the pocket hole in which the bearing pin penetrates is released.

If, on the other hand, a person only loosens the fastening screw, thebearing bolt cannot penetrate down into the pocket hole because of thesafety screw that is screwed in on the opposite side.

It is clear that such an arrangement of the safety screw and fasteningscrew of the bearing pin results in a simple yet effective securing ofthe bearing pin. Adjustability is not impaired by the safety screw whenusing the glass door. In this regard, it does not matter how the fittingis constructed.

Further details, features and advantages of the invention are indicatedin the following description of a preferred embodiment example withreference to the drawings.

FIG. 1 shows an upper fitting with lift-out protection;

FIG. 2 shows an upper fitting according to FIG. 1 with the bearing pinmoved in;

FIG. 3 shows an upper fitting according to FIG. 1 with the fasteningscrew removed.

FIG. 1 shows an upper fitting that is used for all-glass doors with aglass leaf. Since the invention is only concerned with the upper area ofa fitting that is constructed in different ways and since only thelift-out protection is referred to, all other parts not relevant to theinvention have been omitted.

The upper fitting 3 substantially comprises a fitting body 4 which has aglass receptacle 21 for the glass leaf of the all-glass door. Located atthe upper area of the fitting body 4 is a pocket hole 53 into which abearing pin 7 of an upper bearing in an overpanel or the likepenetrates, this bearing pin 7 being constructed so as to bedisplaceable. The fitting body 4 is defined laterally by clampinginserts 25 (clamping plates). The clamping inserts 25 are covered bycover panels 26. When the cover panels 26 are removed, as is illustratedin FIGS. 2 and 3, two screw elements within the upper fitting 3, namely,a holding screw 50 and a safety screw 48, are accessible. The holdingscrew 50 is fitted with its head in an elongated hole oriented in axialdirection and with its thread in an internal thread 51 arranged in thebearing pin 7. When the bearing pin 7 moves out (see FIG. 1), theholding screw 50 is tightened so that a frictional and positiveengagement occurs between the bearing pin 7 and the upper fitting 3.

Directly below the end of the bearing pin 7 which penetrates into thepocket hole 53 is a safety screw 48 orthogonal to the longitudinal axisof the fitting. The safety screw 48 penetrates the pocket hole 53. Thelength of the safety screw 48 is adapted to the thickness of the fittingbody and clamping inserts. However, the safety screw 48 is arranged soas to be offset by 180° relative to the holding screw 50. This meansthat when a door leaf is closed, e.g., the safety screw 48 lies outsideof the space and the holding screw 50 is located inside the space.Therefore, when a door is closed no one may simultaneously unscrew bothscrews, namely, the safety screw 48 and the holding screw 50, in orderto lower the bearing pin 7 into the pocket hole 53 so as to remove thedoor leaf from its working position.

In FIG. 2, the safety screw 48 which was screwed into an internal thread55 of the clamping insert 25 has been removed. It is clear thatloosening the holding screw 50 can cause the bearing pin 7 to be loweredonly when the safety screw 48 has been removed beforehand. This is shownin FIG. 2.

FIG. 3 shows the situation in which the holding screw 50 is removed fromthe bearing pin 7 while the inserted safety screw 48 is present in thethread 55 at the same time.

As can be seen from the embodiment example in FIGS. 1 to 3, a door isalso operable compared to the cited prior art according to DE 89 10560.9 U1 when the holding screw 50 is removed since the bearing pin 7cannot be pushed out of the upper bearing because of the safety screw48. Due to the fact that the safety screw 48 is offset by 180° relativeto the holding screw 50 when the upper fitting 3 is viewed from the top,the entire all-glass door is also protected from being lifted out at thesame time.

REFERENCE NUMBERS

-   3 upper fitting-   4 fitting body-   7 bearing pin-   21 glass receptacle-   25 clamping insert (clamping plate)-   26 cover panel-   47 elongated hole-   48 safety screw-   50 holding screw-   51 internal thread-   53 pocket hole-   55 thread

1.-9. (canceled)
 10. A fitting for a glass door comprising: a fittingbody extending along an elongated axis between opposite axial endsthereof and having at least one of a receptacle for a glass leaf, and aclamping device for the glass leaf, one of the axial end of the fittingbody having an elongated pocket hole extending to one axial of thefitting body; and a bearing pin displaceably mounted in the elongatedpocket hole for retaining the glass door in a frame in which the fittingis mounted, the bearing pin being secured in the elongated pocket holeso that the glass leaf is prevented from being removed from the framewhen the door is in a closed position.
 11. The fitting of claim 10,further comprising at least one holding screw for fastening the bearingpin to the at least one of the receptacle and the clamping device. 12.The fitting of claim 11, wherein the holding screw extends into thebearing pin orthogonally to the elongated axis of the fitting body. 13.The fitting of claim 12, wherein one of the fitting body and theclamping device has an elongated hole, and the bearing pin has athreaded bore hole aligned with the elongated hole so that the holdingscrew extends through the elongated hole and threadedly engages thethreaded bore hole.
 14. The fitting of claim 13, wherein the threadedbore hole is a pocket bore hole.
 15. The fitting of claim 13, whereinthe threaded bore hole penetrates through the bearing pin.
 16. Thefitting of claim 10, further comprising a safety screw extendingorthogonally to the elongated axis of the fitting body and into orthrough the elongated pocket hole, wherein the safety screw is spacedfrom the bearing pin.
 17. The fitting of claim 11, further comprising asafety screw extending orthogonally to the elongated axis of the fittingbody and into or through the elongated pocket hole, wherein the safetyscrew is spaced from the bearing pin.
 18. The fitting of claim 17,wherein the safety screw and the at least one holding screw extend inopposite directions towards the elongated axis of the fitting body. 19.The fitting of claim 10, further comprising at least one cover platecovering an outer surface of the fitting body.